A common view GPSDO to synchronize netted radar

Sandenbergh, J.S.; Inggs, Michael

doi:10.1049/cp:20070499

Cited by 31 publications

(22 citation statements)

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“…The system uses GPS disciplined oscillators (GPSDOs) developed at the University of Cape Town to synchronise the nodes in time and frequency, [11]. The properties of the system can be seen in Table 1.…”

Section: Netrad System and Datamentioning

confidence: 99%

Coherent analysis of horizontally-polarized monostatic and bistatic sea clutter

Ritchie

Al-Ashwal

Stove

et al. 2012

IET International Conference on Radar Systems (Radar 2012)

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Section: Netrad System and Datamentioning

confidence: 99%

Coherent analysis of horizontally-polarized monostatic and bistatic sea clutter

Ritchie

Al-Ashwal

Stove

et al. 2012

IET International Conference on Radar Systems (Radar 2012)

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“…In 2010/11 NetRAD was upgraded to provide 500 W transmit power and to remove the need for physical connection of the nodes, by using GPSDOs at each node and wireless links from the master node to each of the other nodes [3]. These modifications significantly increased the achievable range, and allowed much greater node separation.…”

Section: Nextrad Objectivesmentioning

confidence: 99%

“…All three nodes are equipped with GPS disciplined oscillators [16] which supply a stable 100 MHz reference clock to the digital and RF transceivers. Critical subsystems in each node can be monitored and controlled by a laptop computer.…”

Section: A High Level Descriptionmentioning

confidence: 99%

First measurements with NeXtRAD, a polarimetric X/L Band radar network

Alhuwaimel¹,

Coetzee²,

Cheng³

et al. 2017

2017 IEEE Radar Conference (RadarConf)

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Abstract-NeXtRAD is a fully polarimetric, X/L Band radar network. It is a development of the older NetRAD system and builds on the experience gained with extensive deployments of NetRAD for sea clutter and target measurements. In this paper we will report on the first measurements with NeXtRAD, looking primarily at sea clutter and some targets, as well as early attempts at calibration using corner reflectors, and an assessment of the polarimetric response of the system. We also highlight innovations allowing for efficient data manipulation post measurement campaigns, as well as the plans for the coming years with this system.

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“…Figure 1 shows a map of the experiment location, with a baseline of approximately 1830 m between the monostatic transceiver node (node 3) and the two co-located bistatic receiver nodes (node 1 and node 2). The nodes were synchronized and triggered using the GPS Disciplined Oscillators (GPSDOs) developed at the University of Cape Town (UCT) and described in [11][12]. The GPSDOs provided also the coordinates and altitudes of the nodes, and the resulting grazing angle varied between 0.7° and 1.12° with the different bistatic angles.…”

Section: Radar System and Data Collectionmentioning

confidence: 99%

Analysis of polarimetric bistatic sea clutter using the NetRAD radar system

Fioranelli

Ritchie

Griffiths

et al. 2016

IET Radar, Sonar & Navigation

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This paper presents a comparative analysis of amplitude and Doppler spectra statistics from monostatic and bistatic sea clutter data at S-band. These data cover a range of bistatic angles from 60° to 120° and include simultaneous monostatic and co-polarized and cross-polarized bistatic recordings, providing direct comparison of their statistical properties. The time series of amplitude data are fitted to the compound K and K+Noise distribution in the range domain and in the Doppler domain, and the variation of the shape parameter is presented for monostatic and co-polarized and cross-polarized bistatic data as an indication of the spikiness of the clutter. From the analysis of this parameter it is shown that cross-polarized bistatic data tend to be less spiky in the range and Doppler domain than the simultaneous co-polarized bistatic data, and than the simultaneous monostatic data, which could be advantageous in terms of radar detection performance, especially for low-visibility maritime targets.

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A common view GPSDO to synchronize netted radar

Cited by 31 publications

References 0 publications

Coherent analysis of horizontally-polarized monostatic and bistatic sea clutter

Coherent analysis of horizontally-polarized monostatic and bistatic sea clutter

First measurements with NeXtRAD, a polarimetric X/L Band radar network

Analysis of polarimetric bistatic sea clutter using the NetRAD radar system

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